<WrapPanel
HorizontalAlignment="Center"
ScrollViewer.VerticalScrollBarVisibility="Disabled">
<GroupBox
Header="{DynamicResource ResourceKey=StampUserTab_Strings}"
BorderThickness="1.3"
Style="{StaticResource GroupBoxBorder}" >
<ListBox
Grid.Row="1"
Name="ComponentBox"
ItemTemplate="{DynamicResource StringTemplate}"
VerticalContentAlignment="Stretch"
ScrollViewer.CanContentScroll="True"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ScrollViewer.VerticalScrollBarVisibility="Auto"
VerticalAlignment="Stretch"
ItemsSource="{Binding ActiveSettings.Components}"
SelectionChanged="ComponentBox_SelectionChanged"
Style="{StaticResource ResourceKey=SettingsListBoxUser}">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
</GroupBox>
</WrapPanel>
This is my code. The main problem is, that when i add items to the listbox, it keeps expanding out of my screen. I want to make it bound to screen, so when it reaches the bottom, the vertical scroll appers and can be used to scroll the content.
I've tried to set the Height of the grid ro to *, but it didn't help.
Any ideas?
Edit:
The problem was the WrapPanel. I changed it to Grid, defined rows and columns with * heights and widths. After adding my elements to the grid rows and colums the listbox were collapsed to scrolls after the expanding. Thank you for the help.
It seems as though you could do with reading through the Panels Overview page on MSDN. Different Panels have different behaviours and it's pretty important that all new WPF developers know the differences. For example, a Grid can automatically resize its content (the controls placed inside it), whereas a WrapPanel will not.
Therefore, when wishing to constrain the dimensions of your control(s), you should put them into a Grid, or one of the other Panels that provide that functionality and avoid the ones that don't.
You said:
I've tried to set the Height of the grid row to *, but it didn't help
That's because your ListBox is not in a Grid... its parent WrapPanel may be in the Grid, so you could try to set the Grid.Row on that instead.
Related
I want to scroll the datagrid when it's length exceeds the stackpanel, so I tried this:
<StackPanel Orientation="Horizontal">
<ScrollViewer VerticalScrollBarVisibility="Auto" CanContentScroll="True">
<DataGrid Name="dgConfig" VerticalAlignment="Stretch" AutoGenerateColumns="False">
<DataGrid.Columns>
...
</DataGrid.Columns>
</DataGrid>
</ScrollViewer>
</StackPanel>
But this doesn't work, I have searched on this web and failed to find any avaiable solutions. So how should I fix this? Thanks!
ScrollViewers and StackPanels don't work very well together since a StackPanel measures its child elements with infinite horizontal space if its Orientation property is set to Horizontal and infinite vertical space if it is set to Vertical.
So you will either have to specify a height for the StackPanel:
<StackPanel Orientation="Horizontal" Height="100">
If you don't it will have an infinite height and that's why you see no scrollbars.
The other, and much better option, would be to get rid of the StackPanel and use another Panel that doesn't measures its child elements with an infinite space.
The DataGrid has its own ScrollViewer built-in, so you don't need to put it inside a ScrollViewer element yourself. Get rid of the StackPanel(s) and the ScrollViewer:
<DataGrid Name="dgConfig" VerticalAlignment="Stretch" AutoGenerateColumns="False"
VerticalScrollBarVisibility="Auto">
<DataGrid.Columns>
...
</DataGrid.Columns>
</DataGrid>
DockPanel instead of StackPanel works for me.
try adding VerticalScrollBarVisibility="Auto", ScrollViewer.CanContentScroll="True" to datagrid property.
I m having very poor performance results when using ListBox + WrapPanel to display information in my WPF inside ListBox ItemsPanelTemplate.
If I remove the WrapPanel from the ListBox the information takes about 5 sec to display completely with the WrapPanel it takes about 1.10 min.
Any tips on how to improve performance on this?
The configuration is:
My DataTemplate is in App.xaml and uses 1 Border, Grid, 20 TextBlocks wrapped inside 6 different VirtualizingStackPanels.
The ListBox:
<ListBox Name="myListBox"
Margin="4"
BorderBrush="DarkSlateGray" BorderThickness="1"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ItemsSource="{Binding propList}"
ItemTemplate="{StaticResource myDataTemplate}" >
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
Thank You.
WrapPanel doesnt use virtualization, if you will use other panels with virtualization enabled only the elements that are visible in the UI will be created.
I have a view where I display a bunch of trading cards. Each card is a user control, and these are all displayed in a window. There are 4 cards to a row for however many rows are in some observable collection of cards. I want to be able to print this. I have done this in the past by recreating all the UI elements in the code-behind, but I want to rewrite this using MVVM, and even though I could still do this method in MVVM, it doesn't seem to be the cleanest solution. Does anyone know a simpler way to achieve this? Here is my XAML code for the Window of what I want to print:
<ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto">
<ItemsControl ItemsSource="{Binding StateManager.Cards}">
<ItemsControl.Resources>
<DataTemplate DataType="{x:Type cardModels:AttackCard}">
<StackPanel>
<cardViews:AttackCardControl />
</StackPanel>
</DataTemplate>
<DataTemplate DataType="{x:Type cardModels:EquipmentCard}">
<StackPanel>
<cardViews:EquipmentCardControl />
</StackPanel>
</DataTemplate>
...
</ItemsControl.Resources>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Width="960"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</ScrollViewer>
As you can see, I have an ItemsControl that contains all the cards within a wrap panel with a fixed Width. The width of each Card is exactly 240, so this allows exactly 4 cards to fit per row. The Data Templates are for the displaying the different types of cards that all inherit from a Card class and are in an ObservableCollection. Any one have any ideas on how to print this? From my past program, I have also learned that only 2 rows will fit on a sheet of paper and it must be printed at a 90 degree angle (landscape view). Thank you for any help!
actually i did some projects for windows phone 8 devices and
with the concept of listbox control i have already listed some datas in listbox both statically and dynamically(Binding values to itemsSource).,
i have already know how to display single gridview on each list items like one grid view per list items.,
But my problem is , i want to display Two GridViews side by side on every single List.Items inside listbox Dynamically.,
Statically we can do by desing in XAML page that i know., But i dont know
" How To Dynamically Display 2 GridViews side by side on every List items on listbox control"
so My listBox should exactly look like this image.,
Some one please help me how to display my contents on listbox items with 2 grid(side by side) on each list items
Or is there any other control there to display two grids side by side in windows phone
Thanks in advance
just a listbox with a wrap panel inside could solve the issue
<ListBox Width="460" ScrollViewer.VerticalScrollBarVisibility="Auto" Height="402" HorizontalAlignment="Center" Name="lbScans" Margin="0,10,0,10">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel Width="460" HorizontalAlignment="Center" ScrollViewer.VerticalScrollBarVisibility="Auto"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
You can try to use <WrapPanel> from Windows Phone toolkit as ListBox's ItemsPanel to achieve that. For example :
<ListBox>
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel ItemWidth="150" ItemHeight="250"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
.......
.......
</ListBox>
<WrapPanel> arranges ListBox item left to right, then to next row when no more space available for next item in current row. Sample result of using <WrapPanel> can be seen in this SO post by #Xin :
I have ItemControl
It displays one panel for each record inside ObservableCollection.
My Problem is….
When size of ObservableCollection increase window can’t accommodate more panels so it displays only first six panels.
So criteria, One panel for each record inside ObservableCollection,couldn't be accomplish.
So, I need to have scroll bar so I can access each panel.
How does it can be implement?
See one screen shot below and Code of It Here
Thanks......
You need to host your panel within a ScrollViewer. This allows it to grow beyond the space available to it, whilst the ScrollViewer adds a Scrollbar.
You can do this by modiyfing the ItemsControl template:
<ItemsControl>
<ItemsControl.Template>
<ControlTemplate>
<ScrollViewer>
<ItemsPresenter/>
</ScrollViewer>
</ControlTemplate>
</ItemsControl.Template>
</ItemsControl>
Put any controls you want to have scrollbars into the ScrollViewer. Example taken from MSDN:
<ScrollViewer HorizontalScrollBarVisibility="Auto">
<StackPanel VerticalAlignment="Top" HorizontalAlignment="Left">
<TextBlock TextWrapping="Wrap" Margin="0,0,0,20">Scrolling is enabled when it is necessary.
Resize the window, making it larger and smaller.</TextBlock>
<Rectangle Fill="Red" Width="500" Height="500"></Rectangle>
</StackPanel>
</ScrollViewer>